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The method of positron annihilation lifetime (PAL) spectroscopy is employed to study atomic‐deficient free‐volume evolution in nanocomposites prepared by high‐energy mechanical milling of glassy arsenoselenides g‐As‐Se in dry mode and water solution of polyvinylpyrrolidone (PVP). Formalism of x3‐x2‐CDA (coupling decomposition algorithm) describing conversion of bound positron‐electron (positronium,...
Temperature behavior of optical transmission in the fundamental optical absorption edge region is studied for a broad range of As–S glass compositions covering the entire glass‐forming interval. It is shown that temperature dependences of optical gap values for all bulk glasses can be well fitted by the one‐phonon approximation based on Bose–Einstein statistics. Correlation of fitting parameters...